Note 13 - Litigation (Details) - Aeroflex [Member] - USD ($) $ in Millions			7 Months Ended	9 Months Ended	12 Months Ended
	Jul. 01, 2019	Nov. 22, 2017	Jun. 30, 2018	Mar. 31, 2019	Mar. 31, 2018
Note 13 - Litigation (Details) [Line Items]
Loss Contingency, Damages Awarded, Value					$ 4.9
Litigation Case, Interest Rate on Damages Awarded	7.00%		5.75%	6.50%
Business Opportunity [Member]
Note 13 - Litigation (Details) [Line Items]
Loss Contingency, Damages Awarded, Value		$ 1.3
Non-Disclosure Agreements [Member]
Note 13 - Litigation (Details) [Line Items]
Loss Contingency, Damages Awarded, Value		1.5
Total Damages Award by Court [Member]
Note 13 - Litigation (Details) [Line Items]
Loss Contingency, Damages Awarded, Value		$ 2.8
Additional Punitive Damages [Member]
Note 13 - Litigation (Details) [Line Items]
Loss Contingency, Damages Awarded, Value					2.1
Loss Contingency, Damages Sought, Value					$ 5.0